In regard to the occlusion process, at which segment has warm air been lifted above the cooler and cold air?
A. D-C
B. B-A
C. F-E
Answer: A
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How many known marine species have been catalogued by taxonomists at the World Register of Marine Species?
A) Between 100,000 and 150,000 B) Between 150,000 and 200,000 C) Between 200,000 and 250,000 D) Between 250,000 and 300,000 E) More than 300,000
According to the USGS, each person in the United States uses an average of how many metric tons of mineral resources each year?
A. 2 B. 12 C. 22 D. 32 E. 42
During the cold phase (La Niña)
A. lower than normal pressures form across the southern U.S. B. higher than normal pressure are typically centered over Hudson Bay. C. higher than normal pressures form across the southern U.S.
Explain how radioactive decay has always warmed the earth from the inside, and nuclear fusion has always warmed the earth from the outside
A) Much heat was released as matter coalesced to form the earth. This heat resulted in the production of radioactive isotopes, which still reside within the earth today and are a source of internal heat. Our primary external source of heat is from the fusion of hydrogen within the sun. B) The inner Earth is made of fissioning heavy elements while the sun is made of lighter fusing elements. C) Radioactive elements have been within Earth since it was created while the sun is made of fusing hydrogen atoms. D) All of the above are reasonable answers.